False twister spindle and false twister unit

Abstract

The utility model relates to a kind of false twister spindle and false twister unit.The false twister spindle includes: shaft body, outer tube, first bearing and second bearing.The outer tube is coaxially sleeved on the outer circumferential side of the shaft body;The first bearing is arranged between the shaft body and the outer tube in radial direction;The first bearing includes the first bearing outer ring sleeved on the shaft body and the first bearing roller arranged between the shaft body and the first bearing outer ring in radial direction;The second bearing is arranged between the shaft body and the outer tube in radial direction, and is arranged on the side of the first bearing in axial direction;The second bearing at least includes the second bearing outer ring sleeved on the shaft body and the second bearing roller arranged inside the second bearing outer ring in radial direction.The false twister spindle of the utility model is simple in installation process, low in cost, wide in application range and long in service life.

Description

Technical Field

[0001] This utility model relates to the field of textile machinery technology. Specifically, this utility model relates to a false twister spindle and a false twister unit. Background Technology

[0002] In textile machinery, texturing machines are used for texturing synthetic fibers. A texturing machine comprises multiple sets of false twister units. In related technologies, each false twister unit has three false twister spindles. The false twister spindles rotate at the same speed via a synchronizing member mounted at one end of the axis. Friction discs are mounted on the false twister spindles.

[0003] The false twister spindle includes a shaft body, an outer cylinder, and support rollers radially disposed between the shaft body and the outer cylinder. Raceways are required on the outer circumference of the shaft body and the inner circumference of the outer cylinder to allow the support rollers to be positioned within the raceways for radial support. The assembly process of the false twister spindle in related technologies is very complex and the manufacturing cost is high.

[0004] Therefore, there is an urgent need for a false twister spindle and false twister unit that is easy to assemble, relatively low in cost, and can meet the requirements of damping and vibration reduction. Utility Model Content

[0005] To solve the above technical problems, this utility model provides a false twister spindle and a false twister unit.

[0006] In a first aspect, embodiments of the present invention provide a false twister spindle shaft, comprising: a shaft body, an outer cylinder, a first bearing, and a second bearing. The outer cylinder is coaxially sleeved on the outer periphery of the shaft body; the first bearing is radially disposed between the shaft body and the outer cylinder; the first bearing includes a first bearing outer ring sleeved on the shaft body and a first bearing roller radially disposed between the shaft body and the first bearing outer ring; the second bearing is radially disposed between the shaft body and the outer cylinder, and axially disposed on one side of the first bearing; the second bearing includes at least a second bearing outer ring sleeved on the shaft body and a second bearing roller radially disposed inside the second bearing outer ring. The false twister spindle shaft of the present invention has a simple installation process, low cost, wide applicability, and long service life.

[0007] According to some optional embodiments, the second bearing further includes a second bearing inner ring disposed radially inside the outer ring of the second bearing, wherein the second bearing rollers are disposed between the outer ring of the second bearing and the inner ring of the second bearing.

[0008] According to some optional embodiments, a second shaft raceway is provided on the outer peripheral side of the shaft body at a position corresponding to the second bearing to receive the circumferentially extending rollers of the second bearing, the second bearing rollers being radially disposed between the outer ring of the second bearing and the shaft body.

[0009] According to some optional embodiments, the section of the outer cylinder located between the first bearing and the second bearing has a narrowing section extending radially inward; the outer ring of the second bearing is clearance-fitted with the outer cylinder; and a disc spring is provided between the second bearing and the axial end face of the narrowing section facing the second bearing.

[0010] According to some optional embodiments, the false twister spindle further includes: a T-shaped sealing ring, which is radially sleeved between the shaft body and the outer cylinder, axially disposed on the side of the first bearing opposite to the second bearing, and has an interference fit with the inner circumferential side of the outer cylinder; and a tapered sleeve, which is radially sleeved on the shaft body, axially disposed on the side of the T-shaped sealing ring opposite to the first bearing, and cooperates with the T-shaped sealing ring to achieve a seal.

[0011] According to some alternative embodiments, the section of the outer cylinder located between the first bearing and the second bearing has a narrowing section extending radially inward; there is an axial clearance between the outer ring of the first bearing and the axial end face of the narrowing section facing the first bearing, and the T-shaped seal provides axial support directly or indirectly to one axial end of the outer ring of the first bearing facing away from the narrowing section.

[0012] According to some optional embodiments, a disc spring is provided between the T-shaped sealing ring and the first bearing; the outer ring of the second bearing is interference-fitted with the outer cylinder.

[0013] According to some alternative embodiments, at least one O-ring is provided between the outer cylinder and the first bearing in the radial direction.

[0014] According to some optional embodiments, the outer cylinder has a radially outwardly recessed damping ring receiving groove on its inner circumferential side corresponding to the position of the first bearing, and the O-ring damping ring is disposed in the damping ring receiving groove; and the O-ring damping ring extends beyond the radially inner edge of the damping ring receiving groove in a direction toward the radially inner side, so that the O-ring damping ring abuts against the outer ring of the first bearing.

[0015] In a second aspect, embodiments of the present invention provide a false twister unit comprising a false twister spindle as described in any of the above embodiments.

[0016] Traditional false twister spindles typically use rollers directly between the outer cylinder and the shaft as bearings. However, in this invention, the false twister spindle in the above embodiments features bearing outer rings for both the first and second bearings. This eliminates the need for roller-receiving raceways on the inner circumference of the outer cylinder, allowing the outer cylinder to be manufactured from relatively inexpensive materials and eliminating the need for heat treatment, thus significantly reducing costs. Furthermore, a disc spring can be installed at one axial end of either the first or second bearing. This disc spring provides axial damping, eliminating axial clearance and ensuring stability and reduced vibration during high-speed rotation of the false twister spindle. The disc spring can be positioned between the second bearing and the narrowing section of the outer cylinder, resulting in an O-shaped bearing raceway; alternatively, it can be positioned between the first bearing and the T-shaped seal, resulting in an X-shaped bearing raceway. This design allows for greater flexibility and wider applicability. Moreover, the structure of these two bearings simplifies the assembly process of the false twister spindle. In addition, the T-shaped sealing ring can support the disc spring on its axial side and achieve a sealing function through its assembly relationship with the tapered sleeve, thereby ensuring the cleanliness of the product and improving its service life. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A cross-sectional view of the false twister spindle shaft according to some embodiments of the present invention is shown;

[0019] Figure 2 Some embodiments of the present invention are shown, such as Figure 1 A partially enlarged sectional view of the false twister spindle shaft in section A of the image;

[0020] Figure 3 Other embodiments according to the present invention are shown, such as Figure 1 A partially enlarged sectional view of the false twister spindle shaft in section A of the image;

[0021] Figure 4 Further embodiments of the present invention are shown, such as Figure 1 A partially enlarged sectional view of the false twister spindle shaft in section A; and

[0022] Figure 5 Further embodiments of the present invention are shown, such as Figure 1A partially enlarged cross-sectional view of the false twister spindle shaft in section A. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0024] According to an embodiment of this utility model, a false twister spindle is provided. The false twister spindle is used in a texturing machine in textile machinery. The texturing machine is used in the texturing process of synthetic fibers. The texturing machine includes multiple sets of false twister units. Each false twister unit has three false twister spindles. The three false twister spindles rotate at the same speed via a synchronizing member mounted at one axial end. A friction disc is mounted on the false twister spindle. The false twister spindle rotates at high speed during operation; to reduce vibration during operation, a damping element is required in the false twister spindle. This utility model proposes a false twister spindle with simplified design, easy assembly, and lower cost.

[0025] Figure 1 A cross-sectional view of the false twister spindle shaft according to some embodiments of the present invention is shown; Figures 2 to 5 Several embodiments according to the present invention are shown as follows: Figure 1 A partially enlarged sectional view of the false twister spindle in section A of the image. See also... Figures 1 to 5 As shown, the false twister spindle 100 provided according to the embodiment of this utility model includes: a shaft body 1, an outer cylinder 2, a first bearing 3 and a second bearing 4, which are described in detail below.

[0026] The outer cylinder 2 is coaxially sleeved on the outer periphery of the shaft 1.

[0027] The first bearing 3 is radially disposed between the shaft 1 and the outer cylinder 2, and is used to provide radial support between the shaft 1 and the outer cylinder 2. The first bearing 3 includes a first bearing outer ring 31 sleeved on the shaft 1 and a first bearing roller 32 radially disposed between the shaft 1 and the first bearing outer ring 31.

[0028] In this embodiment, a first shaft raceway 11 extending circumferentially to receive the first bearing roller 3 is provided on the outer periphery of the shaft 1 at a position corresponding to the first bearing 3. The radially inner side of the first bearing roller 32 in the first bearing 3 can be disposed in the first shaft raceway 11 to directly contact and support the shaft 1; while the radially outer side of the first bearing roller 32 does not directly contact and support the outer cylinder 2, but contacts and supports the outer ring 31 of the first bearing on the radially outer side; therefore, in this embodiment, the inner periphery of the outer cylinder 2 of the false twister spindle does not need to be specially provided with a raceway to accommodate the first bearing roller 32.

[0029] In addition, the false twister spindle is also provided with a second bearing 4. The second bearing 4 is radially disposed between the shaft body 1 and the outer cylinder 2 to provide radial support between the shaft body 1 and the outer cylinder 2, and is axially disposed on one side of the first bearing 3. In this way, the first bearing 3 and the second bearing 4 are arranged axially at intervals as two support members, which together provide radial support for the shaft body 1 and the outer cylinder 2. The second bearing 4 includes at least a second bearing outer ring 41 sleeved on the shaft body 1 and a second bearing roller 42 radially disposed inside the second bearing outer ring 41.

[0030] In this embodiment, the radial outer side of the second bearing roller 42 in the second bearing 4 does not directly contact and support the outer cylinder 2, but rather contacts and supports the outer ring 41 of the second bearing on the radial outer side; therefore, the inner circumference of the outer cylinder 2 of the false twister spindle in this embodiment does not need to be specially provided with a raceway to accommodate the second bearing roller 42.

[0031] In this utility model, the false twister spindle shaft in the above embodiment, the first bearing 3 and the second bearing 4 both have bearing outer rings, so that the inner circumference of the outer cylinder 2 is no longer provided with a raceway for receiving rollers. Therefore, the outer cylinder 2 can be manufactured with relatively inexpensive materials, and there is no need to heat treat the outer cylinder 2. Thus, the cost can be greatly reduced, and the assembly process is simpler.

[0032] The false twister spindle 100 will be further described below. In some embodiments, see [link to description]. Figure 2 and Figure 3 As shown, the second bearing 4 also includes a second bearing inner ring 43 radially disposed inside the second bearing outer ring 41. Multiple second bearing rollers 42 can be provided and disposed between the second bearing outer ring 41 and the second bearing inner ring 43. In other words, the second bearing 4 can be a standard bearing without special design and processing, thus reducing product manufacturing costs and simplifying the assembly process.

[0033] In addition, the second bearing 4 can be a deep groove ball bearing, or other types of bearings such as cylindrical roller bearings, as long as they can provide radial support. No limitation is made here.

[0034] In some other embodiments, see Figure 4 and Figure 5 As shown, a second shaft raceway 12 that receives the circumferentially extending second bearing roller 42 is provided on the outer peripheral side of the shaft body 1 at the position corresponding to the second bearing 4. The second bearing roller 42 is radially disposed between the outer ring 41 of the second bearing and the shaft body 1.

[0035] Through the above embodiments, multiple second bearing rollers 42 can be provided and disposed between the outer ring 41 of the second bearing and the shaft 1. The inner circumference of the outer cylinder 2 does not need to be provided with a raceway for receiving rollers, which can greatly reduce costs and simplify the assembly process.

[0036] In some embodiments, see Figures 2 to 5 As shown, the false twister spindle 100 also includes a T-shaped sealing ring 5, which is fitted radially between the shaft body 1 and the outer cylinder 2, and is axially positioned on the side of the first bearing 3 opposite to the second bearing 4.

[0037] Specifically, the T-shaped sealing ring 5 can be assembled in the inner circumference of the outer cylinder 2 by interference fit, and plays a sealing role between the shaft 1 and the outer cylinder 2; in addition, the T-shaped sealing ring 5 abuts against the end face of the first bearing 3 in the axial direction, so as to play an axial limiting role for the first bearing 3.

[0038] like Figures 2 to 5 As shown, the false twister spindle 100 also includes a tapered sleeve 8, which is fitted radially onto the shaft 1 and axially positioned on the axial side of the T-shaped sealing ring 5 facing away from the first bearing 3, and cooperates with the T-shaped sealing ring 5 to achieve sealing.

[0039] Specifically, there may be a gap between the conical sleeve 8 and the T-shaped sealing ring 5 to form a labyrinth seal. For example... Figures 2 to 5 As shown, the conical sleeve 8 covers the T-shaped sealing ring 5 in the axial direction, so that the projected portions of the conical sleeve 8 and the T-shaped sealing ring 5 in the radial direction coincide, and a small L-shaped gap is formed between the conical sleeve 8 and the T-shaped sealing ring 5 to achieve a labyrinth-like gap seal between the conical sleeve 8 and the T-shaped sealing ring 5.

[0040] In some embodiments, see Figure 2 and Figure 4 As shown, the section of the outer cylinder 2 located between the first bearing 3 and the second bearing 4 has a narrowing section 21 extending radially inward; the outer ring 41 of the second bearing is clearance-fitted with the outer cylinder 2; a disc spring 6 is provided between the second bearing 4 and the axial end face of the narrowing section 21 facing the second bearing 4.

[0041] Specifically, the disc spring 6 is radially sleeved on the shaft 1 and axially abuts against the end face of the second bearing 4 and the narrowing section 21 facing the second bearing 4, so that the bearing raceway is arranged in an O-shape; at this time, the outer ring 41 of the second bearing 4 and the outer cylinder 2 are in clearance fit, so that the disc spring 6 provides axial damping to the second bearing 4, which can eliminate the axial clearance of the bearing, so that the false twister spindle 100 can remain stable when rotating at high speed and reduce vibration.

[0042] In this embodiment, there is an axial gap between the axial end of the outer ring 31 of the first bearing facing the narrowing section 21 and the axial end face of the narrowing section 21 facing the first bearing 3; at the same time, the T-shaped sealing ring 5 directly provides axial support to the axial end of the outer ring 31 of the first bearing facing away from the narrowing section 21.

[0043] In other embodiments, see Figure 3 and Figure 5 As shown, a disc spring 6 is provided between the T-shaped sealing ring 5 and the first bearing 3. At this time, there is an interference fit between the outer ring 41 of the second bearing and the outer cylinder 2.

[0044] Specifically, the disc spring 6 is radially sleeved on the shaft 1 and axially abuts between the first bearing 3 and the end face of the T-shaped seal ring 5 facing the first bearing 3, so that the bearing raceway is arranged in an X shape, so that the disc spring 6 provides axial damping to the first bearing 3, which can eliminate the axial clearance of the bearing, so that the false twister spindle 100 can remain stable when rotating at high speed and reduce vibration.

[0045] In this embodiment, there is an axial gap between the axial end of the outer ring 31 of the first bearing facing the narrowing section 21 and the axial end face of the narrowing section 21 facing the first bearing 3; at the same time, the T-shaped sealing ring 5 indirectly provides axial support to the axial end of the outer ring 31 of the first bearing facing away from the narrowing section 21 through the disc spring 6.

[0046] It is understandable that when the disc spring 6 is no longer provided between the second bearing 4 and the end face of the narrowing section 21 facing the second bearing 4, the second bearing outer ring 41 of the second bearing 4 and the outer cylinder 2 are in an interference fit.

[0047] Furthermore, in some embodiments, a radial gap exists between the outer cylinder 2 and the outer ring 31 of the first bearing in the radial direction, and at least one O-ring damping ring 7 is provided between the outer cylinder 2 and the first bearing 3. Specifically, as shown... Figures 2 to 5As shown, two O-rings 7 can be provided between the outer cylinder 2 and the first bearing 3. The two O-rings 7 are arranged axially, and their radial projections fall within the outer ring 31 of the first bearing. Thus, the radially outer side of the O-ring 7 abuts against the inner circumference of the outer cylinder 2, and the radially inner side of the O-ring 7 abuts against the outer circumference of the outer ring 31 of the first bearing, so that the O-rings 7 can provide radial damping to the first bearing 3. Of course, this utility model does not limit the number of O-rings 7.

[0048] Furthermore, the outer cylinder 2 has a radially outwardly recessed damping ring receiving groove 22 on its inner circumferential side corresponding to the position of the first bearing 3, and an O-ring damping ring 7 is disposed in the damping ring receiving groove 22. The number of damping ring receiving grooves 22 corresponds to the number of O-ring damping rings 7. Figures 2 to 5 As shown in the embodiment, two O-rings 7 are provided, and correspondingly, two damping ring receiving grooves 22 are provided. It can be understood that the O-rings 7 extend beyond the radially inner edge of the damping ring receiving groove 22 in a radially inward direction, so that the O-rings 7 abut against the outer ring 31 of the first bearing. That is, the radial depth of the damping ring receiving groove 22 is less than the radial dimension of the cross-section of the O-rings 7, to ensure that the O-rings 7 can provide radial damping to the first bearing 3.

[0049] In some embodiments, the O-ring damping ring 7 may be made of a material with elastic properties such as plastic or rubber. The O-ring damping ring 7 can provide axial damping to the first bearing 3 by contacting and pressing against the outer ring 31 of the first bearing.

[0050] In addition, such as Figures 2 to 5 As shown, the false twister spindle 100 also includes a synchronizing member 9, which is radially sleeved on the shaft 1 and axially disposed on the side of the second bearing 4 opposite to the axial direction of the first bearing 3. The synchronizing member 9 can be a gear or a pulley, used to rotate multiple false twister spindles 100 at the same speed via the synchronizing member 9 mounted at one axial end.

[0051] The present invention also provides a false twister unit, which includes at least one false twister spindle 100 as described in any of the above embodiments.

[0052] In the above embodiments, the false twister spindle 100 and the false twister unit using the false twister spindle 100 both have bearing outer rings, so that the inner circumference of the outer cylinder 2 no longer has a raceway for receiving rollers. Therefore, the outer cylinder 2 can be manufactured using relatively inexpensive materials, and heat treatment is not required, thus greatly reducing costs. Furthermore, the disc spring 6 can be positioned between the second bearing 4 and the narrowing section of the outer cylinder 2, resulting in an O-shaped bearing raceway; or it can be positioned between the first bearing 3 and the T-shaped seal ring 5, resulting in an X-shaped bearing raceway. This makes the product design more flexible and its application wider. Moreover, the structural design of the two bearings makes the assembly process of the false twister spindle 100 easier. Additionally, the T-shaped seal ring 5 can support the disc spring 6 on its axial side, achieving a sealing function through its assembly relationship with the tapered sleeve 8, thereby ensuring product cleanliness and improving product lifespan.

[0053] While possible embodiments have been described exemplarily in the foregoing description, it should be understood that numerous variations of the embodiments exist through combinations of all known and readily conceived technical features and implementation methods. Furthermore, it should be understood that the exemplary embodiments are merely examples and do not in any way limit the scope, application, or construction of this invention. The foregoing description is more intended to provide those skilled in the art with technical guidance for transforming at least one exemplary embodiment, wherein various changes, particularly regarding the function and structure of the components, can be made without departing from the scope of the claims.

[0054] Appendix Label Table

[0055] 100. False twister spindle

[0056] 1. Shaft body; 11. First shaft body raceway; 12. Second shaft body raceway;

[0057] 2. Outer cylinder; 21. Narrowing section; 22. Damping ring receiving groove;

[0058] 3. First bearing; 31. Outer ring of first bearing; 32. Roller of first bearing; 4. Second bearing; 41. Outer ring of second bearing; 42. Roller of second bearing; 5. T-shaped seal ring;

[0059] 6. Disc spring;

[0060] 7. O-ring damping ring;

[0061] 8. Conical sleeve;

[0062] 9. Synchronization components.

Claims

1. A false twister spindle, characterized in that, include: Shaft (1) The outer cylinder (2) is coaxially sleeved on the outer periphery of the shaft body; A first bearing (3) is radially disposed between the shaft (1) and the outer cylinder (2); the first bearing (3) includes a first bearing outer ring (31) sleeved on the shaft (1) and a first bearing roller (32) radially disposed between the shaft (1) and the first bearing outer ring (31); and The second bearing (4) is disposed radially between the shaft (1) and the outer cylinder (2) and axially on one side of the first bearing (3); the second bearing (4) includes at least a second bearing outer ring (41) sleeved on the shaft (1) and a second bearing roller (42) disposed radially inside the second bearing outer ring (41).

2. The false twister spindle according to claim 1, characterized in that, The second bearing (4) further includes a second bearing inner ring (43) disposed radially inside the second bearing outer ring (41), wherein the second bearing roller (42) is disposed between the second bearing outer ring (41) and the second bearing inner ring (43).

3. The false twister spindle according to claim 1, characterized in that, The outer periphery of the shaft (1) is provided with a second shaft raceway (12) that receives the second bearing roller (42) extending circumferentially. The second bearing roller (42) is radially disposed between the outer ring (41) of the second bearing and the shaft (1).

4. The false twister spindle according to claim 1, characterized in that, The section of the outer cylinder (2) located between the first bearing (3) and the second bearing (4) has a narrowed section (21) extending radially inward; the outer ring (41) of the second bearing is clearance-fitted with the outer cylinder (2); a disc spring (6) is provided between the second bearing (4) and the axial end face of the narrowed section (21) facing the second bearing (4).

5. The false twister spindle according to claim 1, characterized in that, Also includes: A T-shaped sealing ring (5) is radially fitted between the shaft (1) and the outer cylinder (2), and axially positioned on the side of the first bearing (3) opposite to the second bearing (4), and has an interference fit with the inner circumference of the outer cylinder (2); and A tapered sleeve (8) is fitted radially onto the shaft (1) and axially positioned on the side of the T-shaped seal ring (5) facing away from the first bearing (3), and cooperates with the T-shaped seal ring (5) to achieve a seal.

6. The false twister spindle according to claim 5, characterized in that, The section of the outer cylinder (2) located between the first bearing (3) and the second bearing (4) has a narrowed section (21) extending radially inward. There is an axial gap between the first bearing outer ring (31) and the axial end face of the narrowing section (21) facing the first bearing (3), and the T-shaped seal (5) directly or indirectly provides axial support to the axial end of the first bearing outer ring (31) facing away from the narrowing section (21).

7. The false twister spindle according to claim 5, characterized in that, A disc spring (6) is provided between the T-shaped sealing ring (5) and the first bearing (3). The T-shaped sealing ring (5) indirectly provides axial support to one axial end of the outer ring (31) of the first bearing away from the narrow section (21) through the disc spring (6). The second bearing outer ring (41) is interference-fitted with the outer cylinder (2).

8. The false twister spindle according to claim 1, characterized in that, In the radial direction, at least one O-ring (7) is provided between the outer cylinder (2) and the first bearing (3).

9. The false twister spindle according to claim 8, characterized in that, The outer cylinder (2) has a radially outwardly recessed damping ring receiving groove (22) on its inner circumferential side corresponding to the position of the first bearing (3). The O-ring damping ring (7) is disposed in the damping ring receiving groove (22), and the O-ring damping ring (7) extends beyond the radially inner edge of the damping ring receiving groove (22) in the direction toward the radially inner side, so that the O-ring damping ring (7) abuts against the outer ring (31) of the first bearing.

10. A false twister unit, characterized in that, Includes at least one false twister spindle (100) as claimed in any one of claims 1 to 9.

Images